diff --git a/doc/demo01_hello/download.md b/doc/demo01_hello/download.md
index 1db9fc8..b999297 100644
--- a/doc/demo01_hello/download.md
+++ b/doc/demo01_hello/download.md
@@ -12,4 +12,4 @@ git config --global http.proxy http://127.0.0.1:10809
 git config --global https.proxy https://127.0.0.1:10809
 ```
 
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